// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved. Official site: https://goedge.cn .

package configloaders

import (
	"bytes"
	"encoding/json"
	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
	"github.com/TeaOSLab/EdgeCommon/pkg/systemconfigs"
	"github.com/TeaOSLab/EdgeCommon/pkg/userconfigs"
	"github.com/TeaOSLab/EdgeUser/internal/remotelogs"
	"github.com/TeaOSLab/EdgeUser/internal/rpc"
	"time"
)

var sharedUserPriceConfig *userconfigs.UserPriceConfig
var sharedUserPriceJSON []byte

func init() {
	var ticker = time.NewTicker(1 * time.Minute)
	go func() {
		for range ticker.C {
			_, err := LoadUserPriceConfig()
			if err != nil {
				if rpc.IsConnError(err) {
					remotelogs.Debug("LoadUserPriceConfig", err.Error())
				} else {
					remotelogs.Error("LoadUserPriceConfig", err.Error())
				}
			}
		}
	}()
}

// LoadUserPriceConfig 加载用户计费设置
// 在没有error的情况下，需要保证一定会返回一个不为空的配置
func LoadUserPriceConfig() (*userconfigs.UserPriceConfig, error) {
	rpcClient, err := rpc.SharedRPC()
	if err != nil {
		return nil, err
	}

	resp, err := rpcClient.SysSettingRPC().ReadSysSetting(rpcClient.Context(0), &pb.ReadSysSettingRequest{Code: systemconfigs.SettingCodeUserPriceConfig})
	if err != nil {
		return nil, err
	}

	// 如果是相同，则不更新
	if bytes.Equal(resp.ValueJSON, sharedUserPriceJSON) {
		return sharedUserPriceConfig, nil
	}

	var config = userconfigs.DefaultUserPriceConfig()
	if len(resp.ValueJSON) == 0 {
		return config, nil
	}

	err = json.Unmarshal(resp.ValueJSON, config)
	if err != nil {
		return nil, err
	}

	sharedUserPriceConfig = config
	sharedUserPriceJSON = resp.ValueJSON

	return config, nil
}

func LoadCacheableUserPriceConfig() (*userconfigs.UserPriceConfig, error) {
	if sharedUserPriceConfig != nil {
		// clone是防止被修改
		return sharedUserPriceConfig.Clone()
	}

	return LoadUserPriceConfig()
}